EdMap

EdMap is a DOS sector-based level editor written by Jeff Rabenhorst. Features include:


 * Support for Doom, Doom II and Heretic
 * Online help including a hyperlinked version of the Unofficial Doom Specs
 * Shortcuts to allow fast mouse editing
 * Supports texture/sprite WADs.
 * Easy to switch NODES builder by means of editing a batch file (defaults to WARM)
 * Expert mode that allows all map properties to be edited

Drawbacks of EdMap include a 640KB memory limit and some stability bugs - when using EdMap it is important to regularly save and keep backups of levels.